protester

noun

pro·​test·​er

prəˈtestə(r), 

(ˈ)prō¦t-

plural -s

1

obsolete : one that makes an affirmation

state with ordinary oaths my love to every new protester

—Shakespeare

2

: one that disagrees or disapproves

all their friends were protesters and rebels and seceders

—H. G. Wells

even the town protester thinks of things he would have liked in school

—Education Digest

3

usually capitalized : one of a party among the Covenanters that protested against the resolution of 1650 that all persons not professed enemies to the Covenant or excommunicated should be allowed to serve in the army compare resolutioner

4

: one that protests a bill of exchange or a note

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